<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      function f1() {
        console.log("输出", 100);
        return 10;
      }

      console.log("计算", f1() + 200); // 210
    </script>
  </body>
</html>
